Warp stop-motion for looms.



m. 898,358. I PATEN-TED SEPT. a, 1908.

, W. (moss. WARP STOP MOTION FOR LOOMS.

APPLIOATION PILED AUG. 16, 1907.

WILHELM GROSS, OF FALL RIVER, MASSACHUSETTS.

WARP STOP-MOTION FOR LOOMS. 4

Specification of Letters Patent.

Patented Sept. 8, 1908.

Application filed August 16, 1907. Serial Ii'o. 388,810. I

thread breaks or becomes unduly slack.

A further object of the invention is to arrange the mechanism so that a movement of the stop actuating device will also cause the warp threads to be opened longitudinally to clearly indicate the position of the broken warp end.

The essential feature of my invention is that a drop wire or the like is suspended from each warp thread over two adjacent parallel notched bars, ,one of which bars is arranged to reciprocate at regular intervals transversely across the loom, the other of said bars being normally at rest is so connected with the shipper lever that when a thread breaks and one of said suspended wires drops, it first engages a notch of the reciprocating bar and is carried to one side until said notch registers with a corresponding notch in said second bar, when the wire drops into both notches and locks the two bars together, whereby a further movement of the first bar will also move the second to stop theloom.

It will be seen by this motion that a double object is attained. First, the drop wire, which I was allowed to fall by the broken thread, is drawn to one side to clearly indicate the position of the broken ends, and sec ond, this mechanism which causes said warps to open is also arranged to stop the loom.

A further object of my invention is to apply this motion, which includes the two movable notched bars, to the heddle frame whereby the heddles may be operated upon, if desired, to be moved to either one side or the other of its normal position by the breaking of a warp thread, to clearly indicate the position of the broken warp end, and at the same time trip the shipper lever to stop the loom.

Another feature of my invention is that the reciprocatory bar is operated by means whereby it may be drawn to one side and and heddle frame.

held for a predetermined period and then allowed to move in the opposite direction and rest for another period. This timing device nicely controls the movement of the reciprocating bar whereby the breaking of a thread is caused to stop the loom at the proper time.

The invention is fully set forth in this specification and more particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a view in outline illustrating a portion of the loom,'and showing my stop motion and indicating device as applied to the heddles, l lg. 2-is a side eleva tion of the heddle frame showing my device attached thereto, also the latch which is designed to operate the stop motion. Fig. 3 is a perspective view showing one of the heddles in position to lock the two sliding bars together. Fig. 4is a side elevation of the two sliding bars and their supporting trough as applied to drop wires, also showing means connected to one of said bars for operating the shipper lever to stop the loom, and also means for reciprocating the other bar whereby the same is drawn to one side and held for a predetermined period and then allowed to return in the opposite direction and rest for another period.

Fig. 5is a sectional end view of said bars and a drop wire in position I thereon. Fig. 6-is an end view sectional on line 6-6 of Fig. 1, showing the ratchet and cam by which the operating bar receives its reciprocating motion. Fig. 7-is a modification showing another means for operating the ratchet 29. Fig. 8is a side elevation of the same.

Referring to the drawings at 1 is the lay, 2 the breast beam and 3 the shipper lever. The warp 4 is-run in the usual way from the beam 5 over the rods 6 throu h the heddles 7 and 8. The drop wires 9 are s own in Figs. 4 and 5 as being thin flat blades having an elongated eye 10 through which the actuating bars are adapted to pass. This blade is also provided with a small hole 10 through which the thread 4 is passed that suspends or supports said blade while said thread is taut and in its normal position.

Slidably mounted in a U-shapedtrough 11 is a thin flat bar 12 provided with teeth 13 on its upper edge. At-14 is a similar bar provided with corresponding teeth 15 which are arranged to register with those in bar 12.

across the loom, thebar 12 being caused to reciprocate at regular intervals by any suitable or convenient means, and bar 14 being normally at rest. When this device is applied to drop wires, as illustrated in Fig. 4, 1 preferably use a mechanismsuch as herein shown for reciprocating this bar 12, which is that of a pair of intermediate gears 16 and 17. At

each revolution of the gear 16 the gear 17 receives a half revolution and then rests for a predetermined period. A crank 18 is supported on the same shaft 19 with the gear 17, to which one end of a cord 20 is attached, the opposite end being connected of a thread, said wire engages the teeth of.

both bars locking them together causing the tripping finger to be actuated to operate the shipper lever 3 to stop the loom. Another feature of my invention is that these movable actuating bars 12 and 14 may be arranged to operate the heddles equally well as to operate the drop wires. When applied to the heddles the U-shaped trough 11 is supported at either end in the heddle frame 8 as shown in Fig. 2. These heddle frames may be operated in the usual way by means of the cam 24: and levers 25 which are connected to the lower end of said frames through the cord 26, causing said frames to work up and down to open the shed.

The reciprocatory bar 12 is arranged to be moved first in one direction and then in the other at each downward movement of the heddle frame, said bar being operated through the auxiliary lever 27, to W'hlCll it is connected, by the cord 28.

Mounted on the frame actuating lever 25 is a ratchet wheel 29, see Figs. '1 and 6, to which ratchet is connected the cam 30, both being mounted and fixed to the short shaft 31 whereby they will operate in unison. A pawl 32 supported from the floor or other convenient place, stands upright and is arranged to engage a tooth of the ratchet wheel each time the lever 25 descends and .rotate said ratchet and cam one-quarter downward some distance further than the frame lever, to draw over the reciprocating.

bar 12, and by saidcam is caused to remain in that position during the return stroke, and on the second downward stroke the cam is again turned allowing the reciprocating wire.

assess bar to return by-the action oithe spring 21 and remain inthat position during the return stroke, and so on at each stroke of the frame the. reci ro'cating bar is; caused to move back and orththrough the eye of each heddle. It ,will'be seen y this arrangement that the two levers 25 and 27, which are both'pivoted on the shaft 33, are caused to move in unison one with the other and on the first downward stroke of the same] the auxiliar lever is caused by said cam to be moved urther than th 'frame lever'25, and on the next downward stroke is allowed to return to its first position.

'It will be observed that the heddles are held up clear of this reciprocating bar only while the frame is below the center of its travel, therefore this reciprocating bar is only allowed to move on the last half of the.

downward stroke, as shown by the position of the pawl. The stop motion, as ap lied to this heddle frame, consists of a latch ever 34:v which is pivoted in said frameat 35, and is also connected at its upper end 36 to the bar 14. The lower endof said lever is provided with a hook or projecting lip 37 which .is

adapted to engage the arm 38 of the knee I lever 39 and through the connecting rod 40 operate the trippingfinger 22 to stop the loom upon the next upward strokecf the heddlefra'me.

'The 0 eration of the invention may be more ful y describedas followsi, This device pertains directly to the operatingof a loom when a warpthread breaks, hothto stop the loom and also at the same titheatoindicate the position where the broken warp thread is located.

The device may be 0 I use of drop wires, whic may be located at any convenient'place along the warp threads,

eratedeither the or the same may be arrangedtooperate'the ordinary heddles in the heddle frame.

able casin g pass through an eye in each drolp One of these bars is caused by Sui-tab e means to reci' rocate and move' ac and forth across t e warp at regular intervals.

The second bar, which is adjacent to the first bar, is normally held at rest and is provided" with teeth which are adapted t ore ister with those of said're'ciprocating bar. '5: second bar may be connected in any convenient way so that a movement of the same will operate the shipper handle'to stop the hem. The

slack and allows its wire to dropinto' engage-- ment with the teeth of the reciprocating bar,

this wire is naturally moved-to one side by said bar until it fal s locking the two together. A further move-- either case two serrated bars retainedin'asuit- I alsosinto enga ement w th the tooth of the second bar -t 'erebyi drop wires are all'suspended by the warp ment of this reciprocating bar will draw the warp threads and the adjacent drop wires to one side making a wide opening in both to clearly indicate the position of said broken warp ends, at the same time this side motion also causes the shipper handle to be actuated to stop the loom at the proper time. The same result is obtained when this mechanism is applied to the heddles. The reciprocating bar is drawn to one side on the latter part of the downward stroke of the heddle frame and when a thread is broken the heddle falls u on the teeth of this reciprocating bar an as above described, locks the two bars together drawing the second bar also to one side where both are retained by means of the cam 30, while the heddle frame again ascends. The moving of this second bar from its normal position to one side causes the lever 34 to be moved to throw out its hooked end 37 and upon the next upward stroke of the heddle frame operate the levers 38 and 22 to stop the loom. Another method of operating the ratchet wheel 29 is that illustrated in Figs. 7 and 8, whereby a pin 41 is placed in the cam 24, which at the proper time engages the teeth of the ratchet wheel 29 rotating the cam 30 and causing the auxiliary lever 27 to be thrown downward at the proper time to draw over the toothed bar in the heddle frame.

I do not confine myself to either of the above shown methods of operating the shipper handle to stop the loom as any convenient or desirable means may be used for this urpose whereby a movement of this SQ-CODL bar may throw off the shipper handle to stop the loom.

This device is simple and practical of construction and effective in its operation.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent, is:

1. In a warp stop' motion for looms, a reciprocating bar, means for operating the same, .a second bar arranged beside the former bar and normally at rest, a single support for both bars, and means whereby the breaking of a thread will automatically lock both bars together, whereby the second bar is moved with the first bar to cause the loom to stop.

2. In a warp stop motion for looms, a bar, means for reciprocating said bar, a second bar normally at rest, and means whereby the breaking of a thread will automatically lock both bars together to move said second bar and open the warp thread to indicate the position of the broken ends and also cause the loom to stop.

3. In a warp stop motion for looms, a reciprocatory bar, means for operating the same, a second bar normally at rest, and means for automatically locking both bars together, whereby the second bar is moved with the first bar to cause the loom'to stop, said locking means being normally supported in inoperative position by the warp threads.

4. In a warp stop motion for looms, a reciprocating bar, means for reciprocating said bar laterally across the loom, a shipper handle, a second bar for operating said handle to stop the loom, said bar being normally at rest and means whereby the breaking of a thread will automatically lock both bars together whereby they will both be moved to open the warp thread to indicate the position of the broken ends and also cause the loom to stop.

5. In a warp stop motion for looms, a bar, means for'reciprocating said bar, a second bar normally at rest, heddles adapted to engage the warp threads, and means whereby when a thread breaks said heddles will cause said first bar to move the second bar and open the warp thread to indicate the position of the broken ends and also cause the loom to stop.

6. In a warp stop motion for looms, a serrated bar, means for reciprocating said bar, a second serrated bar normally at rest, heddles adapted to engage the warp thread, and means whereby when a thread breaks or becomes slack a heddle will fall and lock said first and second bars together and move said second bar to stop the loom, said heddle also being drawn to one side to open the warp and indicate the position of the broken ends.

7. A warp stop motion for looms, comprising the heddle frame, heddles in said frame, means whereby said heddles are suspended by the warp threads when the frame is down, a bar, means for reciprocating said bar when said heddles are suspended, a second bar normally at rest, and means whereby when a thread breaks or becomes slack a heddle will fall and lock said bars together, whereby they are moved in unison and stop the loom.

8. A warp stop motion for looms comprising the heddle frame, heddles in said frame,

means whereby said heddles are suspended by the warp threads when the frame is down, a bar supported in said frame, means for reciprocating said bar only when said heddle frames are down, a second bar normally at ciprocating said bar only when said heddles is down, a serrate position of the 11.'A Warp stop motion for looms, com

aresuspended and retaining the same first on ,one end and-then at the .o'pposite end of its stroke for a predetermined period, a secon bar-normally at rest, and means whereby when a thread breaks or becomes slack a heddle will fall and cause said bars to move in unison and stop the loom, said heddle also being drawn to one side to open the warp and indicate the position of the broken ends.

10. A warp stop motion for looms, com rising the heddle frame, heddles in said frame, meanswhereby said heddles are suspended by the warp threads when the frame bar, means for reciprocating said bar, a second serrated bar normally at rest, and means whereby when a thread breaks or becomes slack a heddle will fall and lock said first and second bars to- 'ether and move said second bar to stop the 00m, said heddle simultaneously being drawn to one side to 0 en the warp and indicate the roken ends.

prising the heddle frame, heddles in said frame, means whereby said heddles are sus pended by the warp threads when the frame is down, a bar supported in said'frame,means for reci rocating said bar only when said heddle rames are down, a second bar 'normally at rest, and means whereby. when a thread breaks or becomes slack a heddle will fall and cause said bars to move in unison, and means in said frame whereby the movement of said second bar will cause a further movement of said frame to stop the loom.

12. A war stop motion for looms, comrising the lieddle frame, heddles in said frame, means whereby said heddles are suspended by the Warp threads when the frame is down, a bar, a cam for controlling the movement of said bar when said heddles are suspended, a second bar normally at rest, and

- means whereby when a thread breaks or becomes slack a .heddle will fall and cause said bars to move in unison and stop the loom. i

.13. A war sto motion for looms, comprising the edd e frame, heddles in said frame, means whereb said heddles are suspended by thewarp t eads when the frame, is down, a cam for reciprocating said frame, a bar supported in said frame, a ratchet wheel operated in time with-said cam for re)- ciprocating said bar only frames are down, rest, and means whereby when a thread breaks or becomes slac a heddle will fall'an d a cause said bars to move inunison, and meaiis in said frame whereby the. movement of said second bar will cause a further movement of said frame to stop the 100m.

14. A war stop motion for looms, comrising the eddle frame, a cam operated ever attached to said frame heddles in said frame, means wher'ebyjsaid pended by the warp t eads when the frame .18 down, a bar supported in'said frame, a cam actuated lever for reciprocating said bar only when said heddle frames are down, a ratchet ,for movin said latter cam, and means in-;'

eluding sa1d ratchet and cam whereby said, 70 latter lever is caused to travelin time with: said first lever and receive a greater stroke, a second bar normally at rest, and means whereby when a thread breaks or becomes .2} .75

slack a heddle will fall and cause said bars to move in unison, and ,means in said frame-'11 whereby the movement of said secondbar' will cause a further movement of said frame to stop the loom.

In testimony whereof I aflix my signature".

in presence of two witnesses.

. WILHELM cRoss."

Witnesses:

VICTOR Earns, J. W. Roromw.

when-said heddle a second bar normally at heddles are sus-' .65 

